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| author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-07 18:22:29 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-07 18:22:29 -0800 |
| commit | c00f08d705e149fbfaf7a252b4d4fbb7affdcc96 (patch) | |
| tree | 8c916856376d0d400ddda239d5be386f9b9516d7 /lib | |
| parent | c8b6de16d9434405e5832b8772e4f986ddd5118e (diff) | |
| parent | 3adbefee6fd58a061b2bf1df4f3769701860fc62 (diff) | |
| download | op-kernel-dev-c00f08d705e149fbfaf7a252b4d4fbb7affdcc96.zip op-kernel-dev-c00f08d705e149fbfaf7a252b4d4fbb7affdcc96.tar.gz | |
Merge branch 'slub-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/christoph/vm
* 'slub-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/christoph/vm:
SLUB: fix checkpatch warnings
Use non atomic unlock
SLUB: Support for performance statistics
SLUB: Alternate fast paths using cmpxchg_local
SLUB: Use unique end pointer for each slab page.
SLUB: Deal with annoying gcc warning on kfree()
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.debug | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 0d385be..4f4008f 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -205,6 +205,19 @@ config SLUB_DEBUG_ON off in a kernel built with CONFIG_SLUB_DEBUG_ON by specifying "slub_debug=-". +config SLUB_STATS + default n + bool "Enable SLUB performance statistics" + depends on SLUB + help + SLUB statistics are useful to debug SLUBs allocation behavior in + order find ways to optimize the allocator. This should never be + enabled for production use since keeping statistics slows down + the allocator by a few percentage points. The slabinfo command + supports the determination of the most active slabs to figure + out which slabs are relevant to a particular load. + Try running: slabinfo -DA + config DEBUG_PREEMPT bool "Debug preemptible kernel" depends on DEBUG_KERNEL && PREEMPT && (TRACE_IRQFLAGS_SUPPORT || PPC64) |
